Archimedes' screw

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌɑːkɪˈmiːdiːz ˈskruː/

WordReference Random House Unabridged Dictionary of American English © 2020
Archimedes' screw, 
  • Mechanicsa device consisting essentially of a spiral passage within an inclined cylinder for raising water to a height when rotated.
  • Also,  Archimedean screw. Also called  water snail. 
    • 1860–65

    Collins Concise English Dictionary © HarperCollins Publishers::
    Archimedes' screw, Archimedean screw /ˌɑːkɪˈmiːdɪən, -mɪˈdiːən/ n
    1. an ancient type of water-lifting device making use of a spiral passage in an inclined cylinder. The water is raised when the spiral is rotated
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